Coronagraphic search for exo-planets with a hypertelescope - I. In the thermal IR P. Riaud, A. Boccaletti, S. Gillet, J. Schneider, A. Labeyrie, L. Arnold, J. Baudrand, O. Lardière, J. Dejonghe and V. Borkowski A&A, 396 1 (2002) 345-352 Published online: 22 November 2002 DOI: 10.1051/0004-6361:20021371